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(No Model.)

MR E m L m 0G U M n W No. 594,992. Patented Dec. 7,1897.

li /Vania? lhvrrnn STATES PATENT OFFICE.

WILLIAM P. GOOLMAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO JOSHUA G. TVICKERSIIAM, OF SAME PLACE.

TIRE-TIGHTENER.

SPECIFICATION forming part of Letters Patent No. 594,992, dated December '7, 1897. A li tion fil d October 28, 1896. Serial No. 610,888. (No model.)

To all whom it may concern:

Be it known that I, VILLIAM P. GOOLMAN, of Los Angeles, in the county of Los Angeles and State of California, have invented a new and Improved Tire-Tightener, of which the following is a full, clear, and exact description.

The invention relates to tire tighteners such as shown and described in Letters Patent No. 213,412, granted to me March 18, 1879.

The object of my improvement is to provide an instrument with which a loose tire on a vehicle may be tightened without having to remove it from the wheel. It is intended for use by all who use wagons and buggies, and more especially in hot dry climates, where tires must be tightened often. I attain these objects by the instrument illustrated in the accompanying drawings, in which- Figure I is a front view of the tightener as it appears when in use; Fig. II, a side View showing the working parts; Fig. III, a detached view of the wedge; Fig. IV, a detached view of the link; Fig. V, a sectional View of the standard and shoe on line L L, where the shoe is jointed to the standard.

Similar letters indicate like parts throughout this description.

To the standard A is jointed a shoe 13 near its lower end, as shown at E. This standard is an iron casting formed with three sides, leaving it hollow and open at the front, as shown in FigV. The top of said standard projects forward and is provided with a hole for admitting an ordinary bolt D. The bottom of said standard is grooved transversely at the back, as shown at N, to admit the link G, and is also provided with a projecting bead H at the bottom, on which the link G may rest while being placed in position.

The wedge F is double concave, as shown in Fig. III. The thickest part of the small end of this wedge is the same diameter as the thin portion of the large end of the wedge, so that it may be reversed from the position shown in Fig. II when the spoke is so small that the thin end will not draw the link tight enough.

The lifting-stirrup O is an iron casting with a thin web body, with ribs extending from the top portion, (which projects forward,) down the back of the plate or web, under the bottom, and then projecting forward, forming the hooks c c. In the top of this stirrup O,where it projects forward, is cast a recess to admit the bead of the bolt D and prevent its turning. This improved form of the stirrup (with webbody and ribs) is to admit of the upper end of the standard A being drawn forward between the ribs when the bolt D is tightened, also preventing the bolt from turning, as described.

The operation of tightening a tire with this instrumentis as follows: The bolt D is passed through the hole in the stirrup O and up through the hole in the standard A and the nut (Z started on. The tightener is then placed with the hooks c 0 under the felly of the wheel, with the concave shoe on standard, resting against the back of the spoke. That brings the link G forward past the front of the spoke. The wedge F is slipped under the points of the link. Turn the nut d slightly and the link will be drawn tight on the wedge and prevent any slipping on the spoke. This is the main feature of improvement over my first patent referred to. In the first one there was no jointed shoe on the standard A. It depended on the standard resting against and slipping down the spoke as the bolt was tightened until the link drew tight and held fast. In this improvement there is no slipping on the spoke, therefore no danger of marring the paint. The reason for this is obvious. The shoe B being pivoted to the standard A out of line with the bolt D, the moment the bolt begins to draw the upper end of the standard is drawn forward. Therefore its lower end below the pivot is thrown out, drawing directly on link G, which causes the wedge F and shoe B to bind the spoke as in a vise. The more pressure the tighter the grip on the spoke. Continue tightening the bolt D, and the hooks c 0 under the felly lift it from the shoulder of the spoke and tight against the tire, at the same time forcing the spoke down into the hub. When the felly is so lifted, a washer is slipped under it and around the small pin 011 the spoke. The bolt is then slacked up and the tightener removed to another spoke.

I am aware that my prior patent covers portions of this instrument; but

bolt D, is tightened, clamping the spoke be- 10 tween the wedge F, and shoe B, with a viselike grip, substantially as shown and described.

WILLIAM P. GO OLMAN.

Witnesses:

O. H. J ONES, MILO BAKER.- 

